What is REX?

REX stands for Registered Exporter.
It is a system that allows exporters within the EU to self-declare the origin of their goods under preferential trade agreements.

By issuing a declaration of origin, your customers can benefit from reduced or zero import duties, making your products more competitive in international markets.

Who should use it?

If you export goods under preferential trade agreements and want to claim preferential origin, you must be registered in the REX system.

REX registration

Obtaining an REX number is easy and requires only a one-time registration form.

After registration, however, you are fully responsible for correctly applying the rules of origin and preserving supporting evidence.

Errors in statements of origin can lead to audits, duty drawback, fines or even suspension of your REX registration.

Increase in customs inspections

Customs authorities are increasingly conducting follow-up checks to verify the accuracy of statements of origin.

Irregularities may result in withdrawal of preferential benefits, recoveries and suspension of your REX number.

Trade agreements and rules of origin

Several new trade agreements came into effect in 2025, including with Chile and Mexico.

Each agreement has its own complex rules of origin, which require constant monitoring to stay in compliance.

Impact of sustainability regulations

Customs compliance is increasingly influenced by EU legislation, such as the EUDR (EU Forest Regulation) and CBAM (Carbon Border Adjustment Mechanism).

For certain products, it must be possible to show where the raw materials came from and how they were produced. This can directly affect whether products qualify for preferential origin under REX.

Internal processes

Accurate declarations of origin require well-structured internal procedures, including:

• Verify rules of origin by product
• Retaining supplier statements
• Training staff on correct declarations of origin
• Preparing for customs inspections

Without proper internal controls, the risk of noncompliance increases significantly.

How can you prepare?

Being ready for REX goes beyond mere registration. The origin of products must be clearly and consistently demonstrated, supported by valid documentation. This includes:

• Regular review of product origin
• Verification of supplier documents
• Retain all required registrations and supporting documents
• Preparing for customs inspections
• Keeping abreast of legislative changes

Following these steps will keep you compliant, avoid fines, and retain benefits of preferential trade terms.

Need help?

Do you need support with REX registration, compliance or declarations of origin? Our team of experts is ready to help you!

Contact us for advice and guidance through this page.